Means to deflate inner tubes.



H. N. EVERSOLE, H. R. CAWTHON H. l. OWEN.

MEANS T0 DEFLATE INNER TUBES.

APPLICATION FILED FEB.1.I9I6. I

Patented June 12, 1917.

www@

ffy-1,

WITNESS/5S HENRY NORTH EVERSOLE, HUGH R. CAWTHON, AND HENRY ISAAC OWEN,0F FULTON, MISSOURI; SAID CWTHON AND SAID OWEN ASSIGNORS TO SAID HENRYNORTH EVERSOLE AND FRANK R. EVERSOLE, 0F ST. LOUIS, MISSOURI.

Specification of Letters Patent.

MEANS TO DEFLA'IE INNER TUBES.

Patented June 112, 19917.

. Application filed February 1, 1916. Y Serial No. 75,539.

' act description.

This invention relates to pneumatic tires and has particular referenceto the lling tubes for such tires.

Among` the objects of the invention is to provide a means whereby thevalve of a pneumatic tire may be held open without care or attention onthe part of the operator until the inner tube is deflated.

.With the foregoing and other objects in view, the invention consistslin the arrangement and combination of parts hereinafter described andclaimed, and while the invention is not restricted to the exact detailsof' construction disclosed herein, still for the purpose of illustratinga practical embodiment thereof reference is had to the accompanyingdrawings in .which like reference characters designate the same parts inthe several views, and in which- Figure 1 is a side elevation of aportion of a wheel rim and tire equipped ywith our improvement, the dustycap portion being shown in section;

Fig. 2 is a vertical sectional view, indicating the action of theimprovement; and

Fig. 3 is an elevation 0f the improved cap at right angles to theposition of the same in Fi 1.

lThe main portions `of the valve disclosed herein are of a well knowntype and include the main tube 10 threaded externally for the lockfnut11 and counterbored at 12 lto receive the valve mechanism proper. Thevalve mechanism includes a valve 13 connected to a valve stem 14 andadapted to cooperate with a bushing 15 by virtue of. the spring 16, saidvalve'stem projecting outwardly through a nut 17 tapped into the outerend of the tube. The nut 17 is provided at its outer end with adiametrically arranged rib 17 whereby the nut is manipulated into or outofthe end of the tube.

The valve cap 18 as shown in Fig. 1 fits over the reduced and externallythreaded tip end of the tube 10, and in this position serves to retainthe air and to exclude dust or dirt from the valve. This cap carries atits outer end a central tip 19 designed to ordinarily serve twopurposes'. The ti 19 is adapted to be projected into the end o the tubeand by bearing against the outer end of the valve stem 14 the valve 13is unseated against the force of the spring 16 to either loosen thevalve or to permit the escape of .air from the tire. This tip 19 is alsoprovided with a transverse groove 19 which,

by cooperation with the rib 17 enables the operator to screw the nut 17in or out.

The air passage through this valve vmechanism is necessarilycomparatively restricted, and hence-in the case of large tires the timerequired for deflation is quite material, especially in a busy shopwhere other duties are to be performed. We, therefore, improve themechanism above described in such a manner as to make it possible forthe tip end 19V of the valve cap to be self-retained in the defiatingposition, holding the valve 13 unseated. Our improvement specificallystated comprises the application of a clip 20 to the cap in such amanner as to engage over the threaded end of the tube. This clip isshown as formed' from at spring material and substantially U-shaped, thesame comprising a central barl 20a pass` ing through the tip of the capand terminating in side ends or legs 20h, the extreme points or ends ofwhich ,are deflected outwardly somewhat to facilitate the application ofthe cap to the endof the tube. The clip 2O as shown is not greater inwidth'than the main portion of the cap and hence does not interfere inany manner with the usual outer guard or dust cap 21 over the valve inthe usual manner. Neither does the clip Iinterfere in any manner withthe usual 'and old functions ofthe cap and its tip. With the improvementadded to the cap, when it position, the friction being superior to thelforce of the spring 16 tending to close the stantially U-shaped clip,having the portion valve. The. cap thus will be held in dellatconnectingits members secured in the apering position as long as necessary, butmay ture of the tip with said members pro]ect be pulled by the operatordirectly from such ing at opposite sides of `the tip and in the 15 5position when the tire is deflated. direction of the end thereof.

We claim HENRY NORTH EVERSOLE. The combination with a valve forpneu-HUGH R. CAWTHON. matic tires, of a ca for closing and protect- HENRYISAAC OWEN. ing the valve, sai cap having at its outer` Witnesses: 10end a tip for unseeting of the valve, said D. W. HERRING,

tip having an aperture therein and a sub- N101: T. CAVE.

